<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片区域 -->
    <el-card>
      <el-alert
        title="添加商品信息"
        type="info"
        show-icon
        center
        :closable="false"
      >
      </el-alert>
      <!-- 步骤条 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- 标签页 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          :tab-position="'left'"
          v-model="activeIndex"
          :before-leave="beforeTableLeave"
          @tab-click="tabClicked()"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                prop="goods_cat"
                :options="cateList"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTabData"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  border
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTabData"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="uploadURl"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headersObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip">
                只能上传jpg/png文件，且不超过500kb
              </div>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器 -->
            <quill-editor v-model="addForm.goods_introduce"> </quill-editor>
            <el-button type="primary" class="addbtn" @click="add"
              >添加商品</el-button
            >
          </el-tab-pane> </el-tabs
        ><el-dialog title="图片预览" :visible.sync="previewVisible" width="50%">
          <img :src="pathUrl" alt="" class="preImg" />
        </el-dialog>
      </el-form>
    </el-card>

    <!-- 图片对话框 -->
  </div>
</template>

<script>
import _ from "lodash";
export default {
  data() {
    return {
      activeIndex: "0",
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_number: 0,
        goods_weight: 0,
        // 商品所属的分类数组
        goods_cat: [],
        pics: [],
        goods_introduce: "",
        attrs: [],
      },
      //   验证规则
      addFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请输入商品分类", trigger: "blur" },
        ],
      },
      //   存放分类数据
      cateList: [],
      cateProps: {
        expandTrigger: "hover",
        label: "cat_name",
        value: "cat_id",
        children: "children",
      },
      manyTabData: [],
      onlyTabData: [],
      //   上传图片的url地址
      uploadURl: this.$http.defaults.baseURL + "upload",
      // 图片上传组件的请求头
      headersObj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      pathUrl: "",
      previewVisible: false,
    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    //   获取商品分类数据
    async getCateList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status !== 200) {
        return this.$Message.error(res.meta.msg);
      }
      this.$Message.success("获取参数信息成功");
      this.cateList = res.data;
      console.log(this.cateList);
    },
    // 级联选择器监听函数
    handleChange() {
      console.log(this.addForm.goods_cat);

      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = [];
      }
    },
    beforeTableLeave(activeName, oldActiveName) {
      if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
        this.$Message.error("请先选择商品分类");
        return false;
      }
    },
    async tabClicked() {
      if (this.activeIndex === "1") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "many" },
          }
        );
        console.log(res);
        if (res.meta.status !== 200) {
          return this.$Message.error("获取参数失败");
        }
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(" ");
        });
        this.manyTabData = res.data;
        console.log(this.manyTabData);
      }
      if (this.activeIndex === "2") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "only" },
          }
        );
        console.log(res);
        if (res.meta.status !== 200) {
          return this.$Message.error("获取参数失败");
        }

        this.onlyTabData = res.data;
        console.log(this.onlyTabData);
      }
    },
    // 处理图片预览效果
    handlePreview(file) {
      console.log(file);
      this.pathUrl = file.response.data.url;
      console.log(this.pathUrl);
      this.previewVisible = true;
    },
    // 处理图片关闭效果
    handleRemove(file) {
      console.log(file);
      // 1.找到要删除图片的临时路径
      const pathFile = file.response.data.tem_path;
      // 2.找到其索引值
      const i = this.addForm.pics.findIndex((x) => {
        x.pathFile;
      });
      // 3.删除图片
      this.addForm.pics.splice(i, 1);
      console.log(this.addForm);
    },
    // 处理图片上传成功事件
    handleSuccess(response) {
      // 先 拼接图片信息
      const picInfo = { pic: response.data.tmp_path };
      // 保存到数组
      this.addForm.pics.push(picInfo);
      console.log(this.addForm.pics);
    },
    add() {
      console.log(this.addForm);
      // 实现表单预验证
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return this.$Message.error("请填写必要的表单数据");
        // 验证成功接着操作,先将goods_cat 转换为字符串
        // 需要引入lodash 的cloneDeep 做深拷贝
        const form = _.cloneDeep(this.addForm);
        form.goods_cat = form.goods_cat.join(",");
        console.log(form);
        //    处理attrs
        this.manyTabData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(" "),
          };
          this.addForm.attrs.push(newInfo);
        });
        this.onlyTabData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals,
          };
          this.addForm.attrs.push(newInfo);
        });

        form.attrs = this.addForm.attrs;
        console.log(form);
        //   发送请求
        const { data: res } = await this.$http.post("goods", form);
        console.log(res);
        if (res.meta.status !== 201) {
          return this.$Message.error("添加商品失败");
        }
        this.$Message.success("添加商品成功");
        this.$router.push("/goods");
      });
    },
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
      return null;
    },
  },
};
</script>

<style scoped>
.el-steps {
  margin: 15px auto;
}
.el-checkbox {
  margin: 0 5px 0 0 !important;
}
.preImg {
  width: 100%;
}
.addbtn {
  margin-top: 15px;
}
</style>